Situated 351 km southwest from Saskatoon, the RM of Wallace No. 243 is home to a population of 852 and has a population density of 1/km². The RM features the village of Rhein, the special service area of Stornoway, and the localities of Barvas, Calley, Chrysler, Dunleath, Kessock, Rokeby, and Tonkin.